/*
 * Copyright 2007 Rob Nielsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Caller {
    List list = new ArrayList();

    public void addSubject(Subject subject) {
        list.add(subject);
    }

    public void addSubjects(Subject[] subjects) {
        list.addAll(Arrays.asList(subjects));
    }

    public Subject getFirstSubject() {
        return (Subject) list.get(0);
    }

    public Subject[] getSubjects() {
        return (Subject[]) list.toArray(new Subject[list.size()]);
    }

    public Subject run(Callback callback, Subject subject) {
        return callback.invoke(subject);
    }

    public Subject[] run(Callback callback, Subject[] subjects) {
        return callback.invoke(subjects);
    }
}
